Central heating boiler



Sept. 3, 1940.

J. v. GuDMAND-HQYER Er AL 2,213,189

CENTRAL HEATING BoILER Filed Nov. 27, 19:57v

F1' g. 1. I 21 Patented Sept., 3, 1940 si.; STATES CENTRAL HEATllNGBILER Application November 27, 1937, Serial No. 176,782 In DenmarkDecember 14, 1936 3 Claims'.

The invention relates to central-heating boilers of the art consistingof several interconnected water-filled units.

The invention has for its objects rstly to en- 5 able each of the unitsto be manufactured independently from the other units, and consequently,to be removable fromthe boiler for repairing or inspecting purposesWithout necessity of setting the boiler as a Whole out of operation forthis reason; secondly to create a boiler of the art specified in which aVery large grate area can be used in order to enable the burning of allkinds of fuel, also such having only a low caloric value, hereby makingthe boiler specially iitted for horticultural use or the like, Wheregreat lots of fuel with low caloric power is available; thirdly tocreate a boiler with a very great Jfuel magazine, which can standunattended for a long time, the construction being so, that the ashproduced will not stop the air from haying access to the burning fuel.

With these and other objects in mind an embodiment of a boiler inaccordance with the invention shall be described under reference to thedrawing, on which Fig. l shows a vertical section of the boiler, and

-Fig. 2 the same in plan view, with the cover removed.

The boiler shown consists mainly of four units, Viz.. an outer waterjacket l, an inner water jacket 2, and a pipe basket t with collectingchamber forming a part of the fuel magazine proper l with water-lledWalls. The space encircled by the inner water jacket 2 is closed, at thebottom, by a grate 5, While the annular space t between the two waterjackets is connected at .the bottom to the chimney ue l and, at the top,to the space S encircled by the inner water jacket, in which space thepipe basket 3 is inserted. The pipe basket consists of more superimposedWater-nlled pipes forming a .grate like construction interconnecting,vertical collecting chambers 3. rEhe pipe basket may be made in one ormore parts. The fuel magazine is fitted, at the top, with an openingthat can be closed mea-ns of a cover 9. The Iboiler itself can beclosed, at the top, by means of a cover lil, and `it rests at the bottomon a footing ll.

The outer water jacket l is connectedto a return pipe l2 terminating atthe bottom in the Water jacket, and also by means of a nipple i3 at thetop of the water jacket l, to a collecting chamber lll disposed outsideof the boiler. By means of pipes l5 which also serve to support thegrate 5, the said collecting chamber is con- (Cl. IN2- 162) nected atthe bottom to the inner Water jacket 2, in that the pipes l5 areconnected to nipples Iii on the said Water jacket, by means of pipejoints l'l disposed outside of the boiler. The inner water jacket 2 isfurther fitted, at the top, with pipe nipples i8, which by means of pipejoints l@ are connected to pipes 2li leading to an outlet box 2 l.

The two Water jackets l and 2 form a group of units connected 'to thereturn pipe on the one side and to the outlet box on the other side.They form thus a separate closed circuit.

The collecting chamber lll has further two pipe nipples 22 which bymeans of pipe joints 23 are connected to two pipe nipples 2d leadinginto the bottom of the pipe basket 3. The latter is iitted, at the top',with pipe nipples 25 which by means of pipe joints 26 are connected topipes El leading up to the collecting box 2 l. The pipe'basket 3 formsthus in the boiler an independent meinber connected on the one side tothe collecting box ld and, on the other side, to the collecting box 2l.In the same manner, the water-filled Walls 4 in the fuel magazine aresimilarly connected to 'the collecting box i4, and respectively, thecollecting box 2l, by means of pipes 28 and 29 and pipe joints 3U and3|, in such a manner that also these Walls form an independent unit inthe boiler.

The boiler is further, in a manner known per se, fitted with dampers andgates for the supply `of prhnary and secondary air as well as forcleaning for ash, slag and soot.

It is seen that all the pipe joints ll, i9, Z2, 26, 3B and 3l, by meansof Which the units of the boiler are interconnected, are situatedoutside of the boiler so as to be easily accessible, in such a mannerthat the units can easily be taken apart. It will thus especially easilybe feasible to disconnect and remove the fuel magazine i and the pipebasket 3, without the boiler having therefore to be set out ofoperation.

Further it is seen that the fuel filled in the magazine can first burnon the grate proper 5. When this is clogged by ash the air has;` accessto the burning fuel through the openings between the pipes in the pipebasket 3. The filled magazine therefore can stand unattended for a longtime.

We claim:

l. A heater, comprising an outer cylindrical Water jacket, an innercylindrical water jacket disposed concentrically within said outerjacket in spaced relationship to the latter so as to provide an annularnue therebetween, a grate closing the bottom of said inner` jacket, a rebox basket including a plurality of vertical Water pipes projectingupwardly from said grate and being disposed at spaced intervals on acircle having a diameter less than that of said inner Water jacket, saidgrate having some of its perforations outside of said circle, and aplurality of circular tubes supported in superposed spaced relationshipon said vertical pipes and interconnected therewith, and a fuel magazineincluding an innermost cylindrical Water jacket having a diameter lessthan that of the fire box basket and projecting from above into thelatter.

2. A heater, as claimed in claim 1, comprising further pipesinterconnecting said Water jackets and basket pipes and including jointsdisposed outside of said outer1 jacket.

3. A heater, as claimed in claim 1, comprising further Water collectingchambers, pipes interconnecting said water jackets, basket pipes andcollecting chambers, and joints for said pipes, said collecting chambersand joints being disposed outside of said outer jacket,

JULIUS VILLIAM GUDMAND-HQYER. EINAR KAIVIILO DEMANDT HANSEN.

